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Jeff King 4e76832984 blame: output porcelain "previous" header for each file
It's possible for content currently found in one file to
have originated in two separate files, each of which may
have been modified in some single older commit.  The
--porcelain output generates an incorrect "previous" header
in this case, whereas --line-porcelain gets it right.  The
problem is that the porcelain output tries to omit repeated
details of commits, and treats "previous" as a property of
the commit, when it is really a property of the blamed block
of lines.

Let's look at an example. In a case like this, you might see
this output from --line-porcelain:

  SOME_SHA1 1 1 1
  author ...
  committer ...
  previous SOME_SHA1^ file_one
  filename file_one
          ...some line content...
  SOME_SHA1 2 1 1
  author ...
  committer ...
  previous SOME_SHA1^ file_two
  filename file_two
          ...some different content....

The "filename" fields tell us that the two lines are from
two different files. But notice that the filename also
appears in the "previous" field, which tells us where to
start a re-blame. The second content line never appeared in
file_one at all, so we would obviously need to re-blame from
file_two (or possibly even some other file, if had just been
renamed to file_two in SOME_SHA1).

So far so good. Now here's what --porcelain looks like:

  SOME_SHA1 1 1 1
  author ...
  committer ...
  previous SOME_SHA1^ file_one
  filename file_one
          ...some line content...
  SOME_SHA1 2 1 1
  filename file_two
          ...some different content....

We've dropped the author and committer fields from the
second line, as they would just be repeats.  But we can't
omit "filename", because it depends on the actual block of
blamed lines, not just the commit. This is handled by
emit_porcelain_details(), which will show the filename
either if it is the first mention of the commit _or_ if the
commit has multiple paths in it.

But we don't give "previous" the same handling. It's written
inside emit_one_suspect_detail(), which bails early if we've
already seen that commit. And so the output above is wrong;
a reader would assume that the correct place to re-blame
line two is from file_one, but that's obviously nonsense.

Let's treat "previous" the same as "filename", and show it
fresh whenever we know we are in a confusing case like this.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-01-07 19:34:54 -08:00
block-sha1 sha1: provide another level of indirection for the SHA-1 functions 2015-11-05 10:35:11 -08:00
builtin blame: output porcelain "previous" header for each file 2017-01-07 19:34:54 -08:00
ci travis-ci: build documentation 2016-05-10 11:19:07 -07:00
compat Merge branch 'rs/compat-strdup' into maint 2016-09-19 13:51:42 -07:00
contrib Merge branch 'rs/cocci' into maint 2016-11-29 13:28:00 -08:00
Documentation preparing for 2.10.3 2016-12-05 11:25:02 -08:00
ewah ewah: convert to REALLOC_ARRAY, etc 2016-02-22 14:51:09 -08:00
git-gui Merge branch 'rs/git-gui-use-modern-git-merge-syntax' into maint 2016-10-11 14:20:37 -07:00
gitk-git Merge branch 'master' of git://ozlabs.org/~paulus/gitk 2016-03-20 18:05:10 -07:00
gitweb gitweb: escape link body in format_ref_marker 2016-08-01 12:55:40 -07:00
mergetools mergetools: add support for ExamDiff 2016-04-04 09:15:14 -07:00
perl Merge branch 'mm/send-email-cc-cruft-after-address' into maint 2016-11-29 13:27:55 -08:00
po Merge branch 'russian-l10n' of https://github.com/DJm00n/git-po-ru 2016-10-16 20:11:41 +08:00
ppc sha1: provide another level of indirection for the SHA-1 functions 2015-11-05 10:35:11 -08:00
refs files_read_raw_ref: prevent infinite retry loops in general 2016-10-10 10:53:33 -07:00
t blame: output porcelain "previous" header for each file 2017-01-07 19:34:54 -08:00
templates pre-receive.sample: mark it executable 2016-10-28 14:21:11 -07:00
vcs-svn Merge branch 'mr/vcs-svn-printf-ulong' into maint 2016-09-29 16:49:37 -07:00
xdiff Merge branch 'rs/xdiff-merge-overlapping-hunks-for-W-context' into maint 2016-09-29 16:49:39 -07:00
.gitattributes .gitattributes: set file type for C files 2016-07-07 14:11:15 -07:00
.gitignore test helpers: move test-* to t/helper/ subdirectory 2016-04-15 10:12:19 -07:00
.mailmap add David Turner's Two Sigma address 2016-09-26 17:46:44 -07:00
.travis.yml Merge branch 'ls/macos-update' into maint 2016-11-29 13:27:56 -08:00
abspath.c Windows: shorten code by re-using convert_slashes() 2016-04-04 18:03:02 -07:00
aclocal.m4
advice.c i18n: advice: internationalize message for conflicts 2016-06-17 15:45:48 -07:00
advice.h pull: check if in unresolved merge state 2015-06-18 13:17:16 -07:00
alias.c convert trivial cases to ALLOC_ARRAY 2016-02-22 14:51:09 -08:00
alloc.c alloc: factor out commit index 2014-07-28 10:14:33 -07:00
archive-tar.c Merge branch 'jk/big-and-future-archive-tar' 2016-08-12 09:47:37 -07:00
archive-zip.c Merge branch 'rs/archive-zip-many' into maint 2015-09-03 19:18:01 -07:00
archive.c i18n: archive: mark errors for translation 2016-08-09 12:44:59 -07:00
archive.h
argv-array.c argv-array: add detach function 2016-02-22 14:50:32 -08:00
argv-array.h argv-array: add detach function 2016-02-22 14:50:32 -08:00
attr.c Merge branch 'ss/exc-flag-is-a-collection-of-bits' into maint 2016-04-14 18:37:15 -07:00
attr.h
base85.c
bisect.c Merge branch 'jk/printf-format' 2016-07-19 13:22:22 -07:00
bisect.h bisect: simplify the addition of new bisect terms 2015-08-03 11:42:41 -07:00
blob.c add object_as_type helper for casting objects 2014-07-28 10:14:33 -07:00
blob.h
branch.c create_branch: drop unused "head" parameter 2016-11-09 14:56:21 -08:00
branch.h create_branch: drop unused "head" parameter 2016-11-09 14:56:21 -08:00
builtin.h Merge branch 'sb/submodule-helper' 2015-10-05 12:30:19 -07:00
bulk-checkin.c use xsnprintf for generating git object headers 2015-09-25 10:18:18 -07:00
bulk-checkin.h cleanups: ensure that git-compat-util.h is included first 2014-09-15 12:05:14 -07:00
bundle.c bundle: don't leak an fd in case of early return 2016-04-01 10:33:18 -07:00
bundle.h
cache-tree.c cache-tree: do not generate empty trees as a result of all i-t-a subentries 2016-07-18 13:45:33 -07:00
cache-tree.h cache-tree: introduce write_index_as_tree() 2015-08-04 22:02:11 -07:00
cache.h Merge branch 'jk/fetch-quick-tag-following' into maint 2016-10-28 09:01:17 -07:00
check_bindir check_bindir: avoid "test <cond> -a/-o <cond>" 2014-06-09 14:47:06 -07:00
check-builtins.sh check-builtins: strip executable suffix $X when enumerating builtins 2015-02-05 12:03:27 -08:00
check-racy.c check-racy.c: use error_errno() 2016-05-09 12:29:08 -07:00
color.c Merge branch 'jk/squelch-false-warning-from-gcc-o3' into maint 2016-09-19 13:51:41 -07:00
color.h Merge branch 'js/color-on-windows-comment' into maint 2016-07-28 11:25:55 -07:00
column.c use xmallocz to avoid size arithmetic 2016-02-22 14:51:09 -08:00
column.h
combine-diff.c Merge branch 'bc/cocci' 2016-07-19 13:22:16 -07:00
command-list.txt Merge branch 'nd/multiple-work-trees' 2015-07-13 14:02:02 -07:00
commit-slab.h Merge branch 'vs/typofix' 2016-08-12 09:47:37 -07:00
commit.c Merge branch 'rs/copy-array' into maint 2016-10-11 14:18:32 -07:00
commit.h Merge branch 'rs/pull-signed-tag' 2016-08-19 15:34:14 -07:00
common-main.c common-main: stop munging argv[0] path 2016-11-29 11:01:48 -08:00
config.c i18n: simplify numeric error reporting 2016-08-24 08:47:20 -07:00
config.mak.in
config.mak.uname Merge branch 'ew/build-time-pager-tweaks' 2016-08-08 14:48:44 -07:00
configure.ac Merge branch 'dp/autoconf-curl-ssl' into maint 2016-10-28 09:01:13 -07:00
connect.c connect: read $GIT_SSH_COMMAND from config file 2016-07-06 14:04:09 -07:00
connect.h connect & http: support -4 and -6 switches for remote operations 2016-02-12 11:34:14 -08:00
connected.c check_connected: add progress flag 2016-07-20 12:11:09 -07:00
connected.h check_connected: add progress flag 2016-07-20 12:11:09 -07:00
convert.c convert: Correct NNO tests and missing LF will be replaced by CRLF 2016-08-14 13:45:52 -07:00
convert.h convert: unify the "auto" handling of CRLF 2016-07-06 11:53:51 -07:00
copy.c copy.c: use error_errno() 2016-05-09 12:29:08 -07:00
COPYING
credential-cache--daemon.c Merge branch 'jk/common-main-2.8' into jk/common-main 2016-07-06 10:02:57 -07:00
credential-cache.c add an extra level of indirection to main() 2016-07-01 15:09:10 -07:00
credential-store.c add an extra level of indirection to main() 2016-07-01 15:09:10 -07:00
credential.c credential: let empty credential specs reset helper list 2016-02-26 10:58:14 -08:00
credential.h credential: let helpers tell us to quit 2014-12-04 10:11:12 -08:00
csum-file.c sha1fd_check: die when we cannot open the file 2015-03-19 13:35:15 -07:00
csum-file.h Merge branch 'jk/pack-bitmap' 2014-12-12 14:31:42 -08:00
ctype.c kwset: use unsigned char to store values with high-bit set 2015-03-02 12:32:24 -08:00
daemon.c Merge branch 'jk/daemon-path-ok-check-truncation' into maint 2016-11-29 13:27:56 -08:00
date.c date: add "unix" format 2016-07-27 14:15:51 -07:00
decorate.c Remove get_object_hash. 2015-11-20 08:02:05 -05:00
decorate.h
delta.h
diff-delta.c
diff-lib.c Remove get_object_hash. 2015-11-20 08:02:05 -05:00
diff-no-index.c diff-no-index.c: use error_errno() 2016-05-09 12:29:08 -07:00
diff.c Merge branch 'tk/diffcore-delta-remove-unused' into maint 2016-11-29 13:28:03 -08:00
diff.h patch-ids: add flag to create the diff patch id using header only data 2016-07-29 14:10:01 -07:00
diffcore-break.c Merge branch 'tk/diffcore-delta-remove-unused' into maint 2016-11-29 13:28:03 -08:00
diffcore-delta.c diffcore-delta: remove unused parameter to diffcore_count_changes() 2016-11-14 09:24:04 -08:00
diffcore-order.c convert trivial cases to ALLOC_ARRAY 2016-02-22 14:51:09 -08:00
diffcore-pickaxe.c Merge branch 'js/regexec-buf' into maint 2016-09-29 16:49:45 -07:00
diffcore-rename.c Merge branch 'tk/diffcore-delta-remove-unused' into maint 2016-11-29 13:28:03 -08:00
diffcore.h Merge branch 'tk/diffcore-delta-remove-unused' into maint 2016-11-29 13:28:03 -08:00
dir-iterator.c dir_iterator: new API for iterating over a directory tree 2016-06-20 11:38:21 -07:00
dir-iterator.h dir_iterator: new API for iterating over a directory tree 2016-06-20 11:38:21 -07:00
dir.c Merge branch 'rs/use-strbuf-addbuf' into maint 2016-08-08 14:21:42 -07:00
dir.h Merge branch 'mh/split-under-lock' 2016-07-25 14:13:32 -07:00
editor.c editor.c: use error_errno() 2016-05-09 12:29:08 -07:00
entry.c entry.c: use error_errno() 2016-05-09 12:29:08 -07:00
environment.c Merge branch 'js/windows-dotgit' into maint 2016-05-26 13:17:23 -07:00
exec_cmd.c common-main: stop munging argv[0] path 2016-11-29 11:01:48 -08:00
exec_cmd.h common-main: stop munging argv[0] path 2016-11-29 11:01:48 -08:00
fast-import.c Merge branch 'jk/common-main' 2016-07-19 13:22:19 -07:00
fetch-pack.c fetch-pack: do not reset in_vain on non-novel acks 2016-09-23 12:37:45 -07:00
fetch-pack.h
fmt-merge-msg.h
fsck.c fsck: optionally show more helpful info for broken links 2016-07-18 15:15:59 -07:00
fsck.h fsck: give the error function a chance to see the fsck_options 2016-07-18 11:35:00 -07:00
generate-cmdlist.sh generate-cmdlist: re-implement as shell script 2015-08-25 11:24:31 -07:00
gettext.c gettext: add is_utf8_locale() 2016-07-01 12:44:57 -07:00
gettext.h gettext: add is_utf8_locale() 2016-07-01 12:44:57 -07:00
git-add--interactive.perl add--interactive: respect diff.compactionHeuristic 2016-06-16 11:38:58 -07:00
git-archimport.perl
git-bisect.sh i18n: unmark die messages for translation 2016-06-17 15:46:10 -07:00
git-compat-util.h Merge branch 'jk/common-main' into maint-2.10 2016-12-05 11:24:28 -08:00
git-cvsexportcommit.perl
git-cvsimport.perl Merge branch 'cn/cvsimport-perl-update' 2015-06-25 11:08:08 -07:00
git-cvsserver.perl typofix: assorted typofixes in comments, documentation and messages 2016-05-06 13:16:37 -07:00
git-difftool--helper.sh difftool: always honor fatal error exit codes 2016-08-15 15:24:05 -07:00
git-difftool.perl difftool: use Git::* functions instead of passing around state 2016-07-28 14:01:55 -07:00
git-filter-branch.sh Merge branch 'jk/filter-branch-no-index' into maint 2016-02-05 14:54:13 -08:00
git-instaweb.sh git-instaweb: use @SHELL_PATH@ instead of /bin/sh 2015-03-10 15:10:35 -07:00
git-merge-octopus.sh git-merge-octopus: do not capitalize "octopus" 2016-09-08 12:17:10 -07:00
git-merge-one-file.sh Merge branch 'jk/no-diff-emit-common' into maint 2016-03-10 11:13:42 -08:00
git-merge-resolve.sh
git-mergetool--lib.sh Merge branch 'nf/mergetool-prompt' 2016-05-03 14:08:17 -07:00
git-mergetool.sh Merge branch 'nf/mergetool-prompt' into HEAD 2016-05-18 14:40:07 -07:00
git-p4.py Spelling fixes 2016-08-11 14:35:42 -07:00
git-parse-remote.sh i18n: git-parse-remote.sh: mark strings for translation 2016-04-19 12:07:49 -07:00
git-quiltimport.sh git-quiltimport: add commandline option --series <file> 2015-09-01 11:10:07 -07:00
git-rebase--am.sh rebase: update comment about FreeBSD /bin/sh 2016-06-17 11:04:38 -07:00
git-rebase--interactive.sh Merge branch 'rt/rebase-i-broken-insn-advise' into maint 2016-09-29 16:49:46 -07:00
git-rebase--merge.sh Merge branch 'em/newer-freebsd-shells-are-fine-with-returns' into maint 2016-07-06 13:06:41 -07:00
git-rebase.sh i18n: git-sh-setup.sh: mark strings for translation 2016-06-17 15:45:48 -07:00
git-relink.perl
git-remote-testgit.sh transport-helper: do not request symbolic refs to remote helpers 2015-01-21 22:46:59 -08:00
git-request-pull.sh Merge branch 'lt/request-pull' 2014-05-19 10:35:36 -07:00
git-send-email.perl Merge branch 'jc/send-email-skip-backup' 2016-07-11 10:31:04 -07:00
git-sh-i18n.sh i18n: rebase-interactive: mark here-doc strings for translation 2016-06-17 15:45:48 -07:00
git-sh-setup.sh git-sh-setup: be explicit where to dot-source git-sh-i18n from. 2016-10-30 16:13:49 -07:00
git-stash.sh i18n: git-stash: mark messages for translation 2016-08-10 10:50:18 -07:00
git-submodule.sh Merge branch 'sb/submodule-update-dot-branch' 2016-08-10 12:33:20 -07:00
git-svn.perl git-svn: allow --version to work anywhere 2016-07-22 20:38:11 +00:00
GIT-VERSION-GEN Git 2.10.2 2016-10-28 09:02:44 -07:00
git-web--browse.sh git-web--browse.sh: use the $( ... ) construct for command substitution 2014-04-23 15:17:02 -07:00
git.c Merge branch 'jk/common-main' into maint-2.10 2016-12-05 11:24:28 -08:00
git.rc
gpg-interface.c Merge branch 'lt/gpg-show-long-key-in-signature-verification-maint' into lt/gpg-show-long-key-in-signature-verification 2016-08-16 15:04:13 -07:00
gpg-interface.h verify-commit: add option to print raw gpg status information 2015-06-22 14:20:47 -07:00
graph.c Merge branch 'jk/graph-padding-fix' into maint 2016-10-11 14:19:03 -07:00
graph.h pretty: pass graph width to pretty formatting for use in '%>|(N)' 2016-06-16 11:43:36 -07:00
grep.c Merge branch 'js/regexec-buf' into maint 2016-09-29 16:49:45 -07:00
grep.h Merge branch 'jc/grep-commandline-vs-configuration' into maint 2016-08-10 11:55:29 -07:00
hashmap.c convert trivial cases to FLEX_ARRAY macros 2016-02-22 14:51:09 -08:00
hashmap.h hashmap: add string interning API 2014-07-07 13:56:38 -07:00
help.c t0006: skip "far in the future" test when unsigned long is not long enough 2016-07-15 09:05:53 -07:00
help.h
hex.c hex: make wraparound of the index into ring-buffer explicit 2016-10-26 10:54:11 -07:00
http-backend.c Merge branch 'ew/http-backend-batch-headers' 2016-08-12 09:47:38 -07:00
http-fetch.c common-main: call git_setup_gettext() 2016-07-01 15:09:10 -07:00
http-push.c Merge branch 'jk/common-main' into maint 2016-09-08 21:35:51 -07:00
http-walker.c http-walker: reduce O(n) ops with doubly-linked list 2016-07-12 15:17:42 -07:00
http.c http: http.emptyauth should allow empty (not just NULL) usernames 2016-10-04 12:02:00 -07:00
http.h Merge branch 'ep/http-curl-trace' 2016-07-06 13:38:06 -07:00
ident.c Merge branch 'jk/ident-ai-canonname-could-be-null' into maint 2016-10-03 13:22:32 -07:00
imap-send.c Merge branch 'jc/cocci-xstrdup-or-null' into maint 2016-10-28 09:01:23 -07:00
INSTALL git-imap-send: use libcurl for implementation 2014-11-10 09:17:27 -08:00
iterator.h refs: introduce an iterator interface 2016-06-20 11:38:20 -07:00
khash.h convert trivial cases to ALLOC_ARRAY 2016-02-22 14:51:09 -08:00
kwset.c kwset: use unsigned char to store values with high-bit set 2015-03-02 12:32:24 -08:00
kwset.h kwset: use unsigned char to store values with high-bit set 2015-03-02 12:32:24 -08:00
levenshtein.c convert trivial cases to ALLOC_ARRAY 2016-02-22 14:51:09 -08:00
levenshtein.h
LGPL-2.1
line-log.c Merge branch 'bc/cocci' 2016-07-19 13:22:16 -07:00
line-log.h line-log.c: make line_log_data_init() static 2015-01-15 11:05:47 -08:00
line-range.c
line-range.h
list-objects.c struct name_entry: use struct object_id instead of unsigned char sha1[20] 2016-04-25 14:23:42 -07:00
list-objects.h list-objects: pass full pathname to callbacks 2016-03-16 10:41:04 -07:00
list.h list: avoid incompatibility with *BSD sys/queue.h 2016-07-18 11:06:51 -07:00
ll-merge.c Merge branch 'jc/ll-merge-internal' 2016-05-17 14:38:32 -07:00
ll-merge.h
lockfile.c lockfile: improve error message when lockfile exists 2016-03-01 10:16:46 -08:00
lockfile.h mingw: ensure temporary file handles are not inherited by child processes 2016-08-23 09:09:55 -07:00
log-tree.c Merge branch 'nd/log-decorate-color-head-arrow' 2016-08-08 14:48:42 -07:00
log-tree.h Merge branch 'jn/parse-config-slot' 2014-10-20 12:23:48 -07:00
mailinfo.c mailinfo: unescape quoted-pair in header fields 2016-09-28 13:21:18 -07:00
mailinfo.h mailinfo: remove calls to exit() and die() deep in the callchain 2015-10-21 15:59:34 -07:00
mailmap.c cocci: refactor common patterns to use xstrdup_or_null() 2016-10-12 11:22:10 -07:00
mailmap.h
Makefile Merge branch 'ls/macos-update' into maint 2016-11-29 13:27:56 -08:00
match-trees.c match-trees: convert several leaf functions to use struct object_id 2016-04-25 14:26:29 -07:00
merge-blobs.c Merge branch 'jk/no-diff-emit-common' into maint 2016-03-10 11:13:42 -08:00
merge-blobs.h
merge-recursive.c use strbuf_add_unique_abbrev() for adding short hashes, part 3 2016-10-10 11:58:25 -07:00
merge-recursive.h merge-recursive: offer an option to retain the output in 'obuf' 2016-08-01 11:45:30 -07:00
merge.c Convert struct object to object_id 2015-11-20 08:02:05 -05:00
mergesort.c
mergesort.h
mru.c add generic most-recently-used list 2016-07-29 11:05:07 -07:00
mru.h add generic most-recently-used list 2016-07-29 11:05:07 -07:00
name-hash.c convert trivial cases to FLEX_ARRAY macros 2016-02-22 14:51:09 -08:00
notes-cache.c notes: allow treeish expressions as notes ref 2016-01-12 15:10:01 -08:00
notes-cache.h
notes-merge.c Merge branch 'rs/notes-merge-no-toctou' 2016-07-28 10:34:41 -07:00
notes-merge.h notes: extract enum notes_merge_strategy to notes-utils.h 2015-08-17 15:36:23 -07:00
notes-utils.c notes: allow treeish expressions as notes ref 2016-01-12 15:10:01 -08:00
notes-utils.h notes: extract parse_notes_merge_strategy to notes-utils 2015-08-17 15:38:32 -07:00
notes.c use string_list initializer consistently 2016-06-13 10:37:51 -07:00
notes.h Merge branch 'jk/notes-merge-from-anywhere' 2016-02-03 14:15:59 -08:00
object.c Remove get_object_hash. 2015-11-20 08:02:05 -05:00
object.h Remove get_object_hash. 2015-11-20 08:02:05 -05:00
pack-bitmap-write.c Merge branch 'jk/path-name-safety-2.6' into jk/path-name-safety-2.7 2016-03-16 10:42:32 -07:00
pack-bitmap.c Merge branch 'jk/path-name-safety-2.6' into jk/path-name-safety-2.7 2016-03-16 10:42:32 -07:00
pack-bitmap.h pack-bitmap.c: make pack_bitmap_filename() static 2015-01-15 11:04:10 -08:00
pack-check.c Merge branch 'jk/verify-packfile-gently' into maint 2016-10-11 14:21:36 -07:00
pack-objects.c use REALLOC_ARRAY for changing the allocation size of arrays 2014-09-18 09:13:42 -07:00
pack-objects.h
pack-revindex.c use COPY_ARRAY 2016-09-25 16:44:13 -07:00
pack-revindex.h pack-revindex: store entries directly in packed_git 2015-12-21 14:36:28 -08:00
pack-write.c sha1_file: drop free_pack_by_name 2016-07-29 11:05:06 -07:00
pack.h fsck: use streaming interface for large blobs in pack 2016-07-13 09:15:29 -07:00
pager.c pager: move pager-specific setup into the build 2016-08-04 13:51:02 -07:00
parse-options-cb.c remove unnecessary NULL check before free(3) 2016-10-10 11:37:41 -07:00
parse-options.c parse-options.c: make OPTION_COUNTUP respect "unspecified" values 2016-05-05 11:52:45 -07:00
parse-options.h parse_options: allocate a new array when concatenating 2016-07-06 10:11:08 -07:00
patch-delta.c
patch-ids.c patch-ids: refuse to compute patch-id for merge commit 2016-09-12 13:45:01 -07:00
patch-ids.h rebase: avoid computing unnecessary patch IDs 2016-08-11 14:39:16 -07:00
path.c hex: make wraparound of the index into ring-buffer explicit 2016-10-26 10:54:11 -07:00
pathspec.c use COPY_ARRAY 2016-09-25 16:44:13 -07:00
pathspec.h Merge branch 'bw/pathspec-remove-unused-extern-decl' into maint 2016-09-29 16:49:34 -07:00
pkt-line.c introduce hex2chr() for converting two hexadecimal digits to a character 2016-09-07 10:42:46 -07:00
pkt-line.h
preload-index.c cache.h: rename cache_def_free to cache_def_clear 2014-07-13 10:12:37 -07:00
pretty.c Merge branch 'rs/cocci' into maint 2016-10-28 09:01:23 -07:00
prio-queue.c prio-queue: make output stable with respect to insertion 2014-07-15 11:02:54 -07:00
prio-queue.h prio-queue: make output stable with respect to insertion 2014-07-15 11:02:54 -07:00
progress.c use xmallocz to avoid size arithmetic 2016-02-22 14:51:09 -08:00
progress.h
prompt.c prompt.c: remove git_getpass() nobody uses 2015-01-15 11:02:06 -08:00
prompt.h prompt.c: remove git_getpass() nobody uses 2015-01-15 11:02:06 -08:00
quote.c Merge branch 'nd/icase' into maint 2016-07-28 11:26:03 -07:00
quote.h Merge branch 'nd/icase' into maint 2016-07-28 11:26:03 -07:00
reachable.c reachable.c: use error_errno() 2016-05-09 12:29:08 -07:00
reachable.h pack-objects: match prune logic for discarding objects 2014-10-16 10:10:43 -07:00
read-cache.c Merge branch 'tg/add-chmod+x-fix' into maint 2016-09-29 16:49:47 -07:00
README.md README.md: format CLI commands with code syntax 2016-05-31 08:54:24 -07:00
ref-filter.c ref-filter: strip format option after a field name only once while parsing 2016-10-03 12:47:19 -07:00
ref-filter.h branch.c: use 'ref-filter' APIs 2015-09-25 08:54:54 -07:00
reflog-walk.c reflog: continue walking the reflog past root commits 2016-06-06 15:06:44 -07:00
reflog-walk.h convert "enum date_mode" into a struct 2015-06-29 11:39:07 -07:00
refs.c cocci: refactor common patterns to use xstrdup_or_null() 2016-10-12 11:22:10 -07:00
refs.h Merge branch 'mh/ref-iterators' 2016-07-25 14:13:33 -07:00
RelNotes preparing for 2.10.3 2016-12-05 11:25:02 -08:00
remote-curl.c Merge branch 'jk/common-main-2.8' into jk/common-main 2016-07-06 10:02:57 -07:00
remote-testsvn.c common-main: call git_extract_argv0_path() 2016-07-01 15:09:10 -07:00
remote.c use strbuf_addstr() for adding constant strings to a strbuf, part 2 2016-09-15 12:23:38 -07:00
remote.h Merge branch 'jk/push-force-with-lease-creation' into maint 2016-09-08 21:35:53 -07:00
replace_object.c register_replace_ref(): rewrite to take an object_id argument 2015-05-25 12:19:35 -07:00
rerere.c Merge branch 'jc/rerere-multi' 2016-05-23 14:54:38 -07:00
rerere.h Merge branch 'jc/rerere-multi' 2016-04-25 15:17:15 -07:00
resolve-undo.c resolve-undo: be specific what part of the index has changed 2014-06-13 11:49:38 -07:00
resolve-undo.h
revision.c Merge branch 'kw/patch-ids-optim' 2016-08-12 09:47:39 -07:00
revision.h Merge branch 'lt/pretty-expand-tabs' 2016-04-13 14:12:36 -07:00
run-command.c Merge branch 'ab/hooks' 2016-08-19 15:34:16 -07:00
run-command.h run-command: add pipe_command helper 2016-06-17 17:03:56 -07:00
send-pack.c cocci: refactor common patterns to use xstrdup_or_null() 2016-10-12 11:22:10 -07:00
send-pack.h push: accept push options 2016-07-14 15:50:41 -07:00
sequencer.c i18n: fix typos for translation 2016-08-24 08:41:22 -07:00
sequencer.h Merge branch 'jc/conflict-hint' into cc/interpret-trailers-more 2014-11-10 09:56:39 -08:00
server-info.c server-info.c: use error_errno() 2016-05-09 12:29:08 -07:00
setup.c i18n: setup: mark error messages for translation 2016-08-09 12:44:59 -07:00
sh-i18n--envsubst.c add an extra level of indirection to main() 2016-07-01 15:09:10 -07:00
sha1_file.c Merge branch 'jk/fetch-quick-tag-following' into maint 2016-10-28 09:01:17 -07:00
sha1_name.c Merge branch 'bc/object-id' 2016-05-06 14:45:44 -07:00
sha1-array.c
sha1-array.h
sha1-lookup.c sha1-lookup: handle duplicates in sha1_pos() 2014-10-01 13:32:19 -07:00
sha1-lookup.h
shallow.c pass constants as first argument to st_mult() 2016-08-01 14:01:03 -07:00
shell.c common-main: call git_setup_gettext() 2016-07-01 15:09:10 -07:00
shortlog.h shortlog: support outputting to streams other than stdout 2016-06-24 14:25:49 -07:00
show-index.c common-main: call git_setup_gettext() 2016-07-01 15:09:10 -07:00
sideband.c Merge branch 'lf/recv-sideband-cleanup' into maint 2016-08-08 14:21:41 -07:00
sideband.h sideband.c: make send_sideband() return void 2016-06-16 11:40:19 -07:00
sigchain.c sigchain: add command to pop all common signals 2015-12-16 12:06:08 -08:00
sigchain.h sigchain: add command to pop all common signals 2015-12-16 12:06:08 -08:00
split-index.c use COPY_ARRAY 2016-09-25 16:44:13 -07:00
split-index.h split-index: the reading part 2014-06-13 11:49:40 -07:00
strbuf.c Merge branch 'rs/strbuf-remove-fix' into maint 2016-09-29 16:49:35 -07:00
strbuf.h Merge branch 'rs/use-strbuf-addbuf' into maint 2016-08-08 14:21:42 -07:00
streaming.c streaming: make sure to notice corrupt object 2016-09-26 10:48:03 -07:00
streaming.h
string-list.c string_list: use string-list API in unsorted_string_list_lookup() 2016-04-25 11:48:27 -07:00
string-list.h Merge branch 'sb/string-list' 2014-12-22 12:27:30 -08:00
submodule-config.c Merge branch 'sb/submodule-update-dot-branch' 2016-08-10 12:33:20 -07:00
submodule-config.h submodule-config: keep configured branch around 2016-08-01 14:42:07 -07:00
submodule.c Merge branch 'rs/cocci' into maint 2016-10-28 09:01:23 -07:00
submodule.h Merge branch 'jk/submodule-c-credential' 2016-05-17 14:38:25 -07:00
symlinks.c symlinks: remove PATH_MAX limitation 2014-07-07 11:22:42 -07:00
tag.c verify-tag: move tag verification code to tag.c 2016-04-22 14:06:46 -07:00
tag.h verify-tag: move tag verification code to tag.c 2016-04-22 14:06:46 -07:00
tar.h
tempfile.c mingw: ensure temporary file handles are not inherited by child processes 2016-08-23 09:09:55 -07:00
tempfile.h mingw: ensure temporary file handles are not inherited by child processes 2016-08-23 09:09:55 -07:00
thread-utils.c thread-utils.c: detect CPU count on older BSD-like systems 2015-03-10 15:13:28 -07:00
thread-utils.h pack-objects: set number of threads before checking and warning 2014-10-13 12:53:46 -07:00
trace.c trace: do not fall back to stderr 2016-08-05 09:28:17 -07:00
trace.h pkt-line: support tracing verbatim pack contents 2015-06-16 13:24:22 -07:00
trailer.c cocci: refactor common patterns to use xstrdup_or_null() 2016-10-12 11:22:10 -07:00
trailer.h interpret-trailers: add option for in-place editing 2016-01-14 12:22:17 -08:00
transport-helper.c Spelling fixes 2016-08-11 14:35:42 -07:00
transport.c Merge branch 'rs/use-strbuf-add-unique-abbrev' into maint 2016-09-08 21:36:00 -07:00
transport.h push: accept push options 2016-07-14 15:50:41 -07:00
tree-diff.c Merge branch 'jk/avoid-unbounded-alloca' into maint 2016-07-06 13:06:39 -07:00
tree-walk.c tree-walk: convert tree_entry_extract() to use struct object_id 2016-04-25 14:26:28 -07:00
tree-walk.h tree-walk: convert tree_entry_extract() to use struct object_id 2016-04-25 14:26:28 -07:00
tree.c struct name_entry: use struct object_id instead of unsigned char sha1[20] 2016-04-25 14:23:42 -07:00
tree.h Merge branch 'jk/squelch-missing-link-warning-for-unreachable' into maint 2015-06-25 11:02:10 -07:00
unicode_width.h Update of unicode_width.h to Unicode Version 7.0 2014-06-18 10:53:45 -07:00
unimplemented.sh unimplemented.sh: use the $( ... ) construct for command substitution 2015-12-27 15:33:13 -08:00
unix-socket.c Merge branch 'rs/strbuf-getcwd' 2014-09-02 13:28:44 -07:00
unix-socket.h
unpack-trees.c Merge branch 'rs/unpack-trees-reduce-file-scope-global' into maint 2016-09-29 16:49:36 -07:00
unpack-trees.h
update_unicode.sh update_unicode.sh: delete the command group 2014-12-22 10:03:37 -08:00
upload-pack.c Merge branch 'jk/common-main' into maint 2016-09-08 21:35:51 -07:00
url.c introduce hex2chr() for converting two hexadecimal digits to a character 2016-09-07 10:42:46 -07:00
url.h
urlmatch.c urlmatch.c: make match_urls() static 2015-01-15 11:05:48 -08:00
urlmatch.h urlmatch.c: make match_urls() static 2015-01-15 11:05:48 -08:00
usage.c error_errno: use constant return similar to error() 2016-08-31 11:11:54 -07:00
userdiff.c userdiff: add built-in pattern for CSS 2016-06-03 14:45:56 -07:00
userdiff.h diff: clarify textconv interface 2016-02-22 10:40:35 -08:00
utf8.c utf8: add function to align a string into given strbuf 2015-09-17 10:02:48 -07:00
utf8.h typofix: assorted typofixes in comments, documentation and messages 2016-05-06 13:16:37 -07:00
varint.c cleanups: ensure that git-compat-util.h is included first 2014-09-15 12:05:14 -07:00
varint.h cleanups: ensure that git-compat-util.h is included first 2014-09-15 12:05:14 -07:00
version.c
version.h
versioncmp.c versionsort: support reorder prerelease suffixes 2015-02-27 13:38:22 -08:00
walker.c walker: let walker_say take arbitrary formats 2016-07-08 10:11:23 -07:00
walker.h walker: let walker_say take arbitrary formats 2016-07-08 10:11:23 -07:00
wildmatch.c typofix: assorted typofixes in comments, documentation and messages 2016-05-06 13:16:37 -07:00
wildmatch.h
worktree.c worktree: allow the main brach of a bare repository to be checked out 2016-10-14 09:58:58 -07:00
worktree.h worktree.c: add is_worktree_locked() 2016-06-13 11:53:14 -07:00
wrap-for-bin.sh wrap-for-bin.sh: regenerate bin-wrappers when switching branches 2016-05-10 13:23:34 -07:00
wrapper.c Merge branch 'sb/submodule-parallel-fetch' into maint 2016-07-28 11:26:02 -07:00
write_or_die.c write_or_die: drop write_or_whine_pipe() 2016-08-05 09:28:17 -07:00
ws.c
wt-status.c use strbuf_add_unique_abbrev() for adding short hashes, part 3 2016-10-10 11:58:25 -07:00
wt-status.h wt-status.c: split bisect detection out of wt_status_get_state() 2016-04-22 14:09:39 -07:00
xdiff-interface.c Merge branch 'js/regexec-buf' into maint 2016-09-29 16:49:45 -07:00
xdiff-interface.h xdiff: reject files larger than ~1GB 2015-09-28 14:57:23 -07:00
zlib.c zlib: initialize git_zstream in git_deflate_init{,_gzip,_raw} 2015-03-05 15:46:03 -08:00

Git - fast, scalable, distributed revision control system

Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals.

Git is an Open Source project covered by the GNU General Public License version 2 (some parts of it are under different licenses, compatible with the GPLv2). It was originally written by Linus Torvalds with help of a group of hackers around the net.

Please read the file INSTALL for installation instructions.

Many Git online resources are accessible from http://git-scm.com/ including full documentation and Git related tools.

See Documentation/gittutorial.txt to get started, then see Documentation/giteveryday.txt for a useful minimum set of commands, and Documentation/git-.txt for documentation of each command. If git has been correctly installed, then the tutorial can also be read with man gittutorial or git help tutorial, and the documentation of each command with man git-<commandname> or git help <commandname>.

CVS users may also want to read Documentation/gitcvs-migration.txt (man gitcvs-migration or git help cvs-migration if git is installed).

The user discussion and development of Git take place on the Git mailing list -- everyone is welcome to post bug reports, feature requests, comments and patches to git@vger.kernel.org (read Documentation/SubmittingPatches for instructions on patch submission). To subscribe to the list, send an email with just "subscribe git" in the body to majordomo@vger.kernel.org. The mailing list archives are available at http://news.gmane.org/gmane.comp.version-control.git/, http://marc.info/?l=git and other archival sites.

The maintainer frequently sends the "What's cooking" reports that list the current status of various development topics to the mailing list. The discussion following them give a good reference for project status, development direction and remaining tasks.

The name "git" was given by Linus Torvalds when he wrote the very first version. He described the tool as "the stupid content tracker" and the name as (depending on your mood):

  • random three-letter combination that is pronounceable, and not actually used by any common UNIX command. The fact that it is a mispronunciation of "get" may or may not be relevant.
  • stupid. contemptible and despicable. simple. Take your pick from the dictionary of slang.
  • "global information tracker": you're in a good mood, and it actually works for you. Angels sing, and a light suddenly fills the room.
  • "goddamn idiotic truckload of sh*t": when it breaks